Wagon-jack.



v PATENTED MAY 21, 1907. G. & A. HAAG. WAGON JACK.

APPLICATION FILED H1115, 190s.

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PATENTED MAY 21, 19o?,

l No. 854,490.

G. & A. HAAG.

WAGON JACK. APPLICATION FILED rm. 5,1906.

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WAGON-JACK.

Speccaton of Letters Patent.

Patented May 21, 1907.

Application filed February V5, 1906. Serial Noa 300.164.

To all whom, t may concern,.-

Be it known that we, GEORGE HAAG and ALBERT HAAG, citizens of the United States, residing at Peoria, in the county of Peoria and State of Illinois, have invented certain new and useful Improvements in "Wagon- Jacks and we do hereby declare that the following is a full, clear, and exact description of the invention, which will enableothers skilled in the art to which it appertainsto make and use the same.

This invention has reference to certain new and useful improvements in raising and loweringmechanism, having for its object a lift or wagon-jack adapted to raise and lower one end of a wagon for the purpose of discharging any material therein from the rear end of the wagon into a suitable receptacle, conveyer or other suitable 'means from which the same may be conveyed to a store-house or bin. Said mechanism containing means whereby the driving parts may be reversed at will and also embodying means for automatically checking the upward or downward movement of the wagon when it has reached a given height or lowered again to the ground.

The invention consists essentially of a worm wheel shaft carrying a drum an intermittently revoluble shaft carrying a worm in engagement with and adafpted to actuate the worm wheel and its sha t; of means for intermittently clutching the worm to its shaft, an internal ring gear carried on the worm-shaft and in clutch engagement with the worm thereon, a gear-wheel loosely carried on the worm-shaft and intermeshing with a plurality of pinions which are in mesh with the internal gear aforesaid; means for intermittently clutching the aforesaidgear to the worm-shaft, and mechanism in connection with the drum-shaft adapted through the operation of the worm-shaftto dis-connect the clutch devices from the gear-wheel on the worm-shaft when the wagon has been elevated to a pre-determined height and also to dis-connect the clutch devices from the worm on the worm-shaft when the wagon has been lowered a pre-determined distance. For a further and full description -of the invention herein and the merits thereof, and also to acquire a knowledge of the details of construction of the means for effecting the result, reference is had to the following description and drawings hereto attached.

While the essential and characteristic features of the invention are susceptible of modification, still the preferred embodiment of the invention is illustrated in the accompanying drawings, in which Figure 1 is a greatly reduced side elevation of my im roved raising and lowering mechanism and) the support or standards to which the same are attached, also showing in dotted lines an end view of a wagon and the mode of raising the same from the ground, said wagon being in a partially elevated position Fig. 2 is an end elevation of the lower portion of one of the standards or supports comprising my device, showing the mechanism attached thereto for elevating or lowering a wagon, Fig. 3 is a vertical section taken on the line KMX of Fig. 2, and Fig. 4 is an enlarged vertical longitudinal section of the mechanism carried on the worm-shaft and showing the said shaft supporting the same.

Like numerals of reference indicating corresponding parts throughout the figures.

In the drawings 1 and 2 denote a pair of vertical standards or supports consisting of the uprights 2a and 3 whichconverge to a point at their upper ends and united in a suitable casting 4 which are connected with a cross brace or reach 5 which serves to connect the upper ends of the standards 1 and 2, somewhat as seen in Fig. 1 And to brace the upper ends of the standards and the cross brace 5 we have provided the short braces or reaches 6 which connect at a suitable point with the standards 1 and 2 and the body of the brace 5, as seen in Fig. 1. The lower ends of the uprights 2iL and 3 are connected the cross-braces 7 and at a suitable point up from the bottom of the standard 1 is a cross-piece or brace 8 to which is connected the short uprights or standards 9 and 10 which at their lower ends are connected to the brace 7, described as connecting the lower ends of the uprights 2a and 3 of the standard 1. i

11 denotes, 'what is here.termed a wormshaft and is the driving shaft through and by means of which power is transmitted for elevating and lowering a wagon. This driving shaft has the opposite squared ends 12 and 13 and the same is suitably liournaled in bearings attached to or forming a part of a bracket 14 secured to the uprights 9 and 10. The mode of imparting the power to this worm or driving-shaft is by connecting with lOO one of the ends thereof a tumbling-shaft (not shown) or some other means connected with a suitable source of power.

On the shaft 11 is loosely carried an elongated sleeve 15 having attached thereto or made integral therewith 'the worm 16. The sleeve for a portion of its length where it coincides and crosses the upright 9 has the reduced portion 17 and a boxing 18 which forms a part of a bracket 19 serves as a bearing for the reduced portion of the said sleeve,

somewhat in the manner as seen in Fig. 4 and by reducing the sleeve it forms opposite shoulder portions 20 to engage with the boxing 18 and prevents endthrust or lateral movement of the sleeve and worm. The outer end of the sleeve has a clutch face 21 adapted to have a clutch engagement with the clutch face 22 of a sleeve 23 having a slidable connection with the squared end 13 of the shaft 11 and the other end of the said sleeve is provided with a clutch face 24 similar to that asat 21 which is adapted to have a clutch engagement with a clutch face 25 formed on a hub extension of an internal ring-gear 26.

On the shaft 11 and 'within the circle described by the teeth of the internal-gear 26 I place a small gear-wheel 27 provided with a hub extension having a clutch face 28 which is adapted to have a clutch engagement with a clutch face 29 of an elongated sleeve 30. This sleeve crosses the upright 10 and at this point is similar to the portion 17 of thc sleeve 15. In other words it has a reduced portion 31 providing the oppositely disposed shoulders 32 and said reduced portion has bearing in a boxing 33 secured to the bracket 14, 'with which the shoulder portions 32 engage and thereby prevent endthrust or lateral movement of the said sleeve. The sleeve 30 at its outer end is provided with a clutch face 34 adapted to have a clutch engagement with a clutch face 350il a sleeve 36 slidably carried on the squared end 12 of the shaft 11. And to retain the shaft 11 in position with the parts described carried there upon and to prevent endthrust thereof I insert a pin 37 through the shaft 11, with its ends projecting upon opposite sides of the shaft and these are disposed in an annular chamber 38 formed between the inner end of the gear 27 and the hub of the internal ring-gear 26, by cutting out a. seat in the end of the gear as shown in Fig. 4.

In mesh with the gear-wheel 27 is a pair of corresponding gear wheels 39 and 40 which are also in mesh with the internal ringgear 26. Said gears 39 and 40 are carried upon shafts41 and42 which are journaled in suitable bearings, preferably forming a part of the boxing 33 attached to the bracket 14. For inclosing the gears 27, 39 and 40 within a casing 43 of which the internalgear 26 forms a part, We provide the covering or plate 4.4, of annular formation which is provided with openings co-inciding with the shaft 11 and the shafts 41 and 42 and said covering is adapted to be secured in place adjacent to the outer face of the casing containing the internal-ring-gear 26 by means of an arm 45 adapted to be secured on the boxing 33 attached to the bracket 14, substantially in the manner seen in Fig. 2.

The sleeve 23 above referred to is provided with an annular groove 46 with which engages the lower end of an arm or lever 47 which is fulcrumed at 48 to 'an extension 49 of the bracket 14. And the sleeve 36 which is in all respects similar to the sleeve 23 is provided with an annular groove 5() with which engages the lower end of an arm or lever 51 fulcrumed at 52 to an extension 53 of the bracket 14. Although not shown, except greatly reduced in Fig. 1 the lower ends of the levers 47 and 51 are provided with the bifurcated portions which is the usual construction of levers of this character where they are adapted to engage with clutch members slidably and rotatably carried on their supporting shafts. i

Pivotally connected at 54 with the lever 47 and at 55 with the lever 51 is a horizontally disposed reach 56 provided at its opposite ends with perforations 57 with which may be connected when it is desired an operators rod 58, whereby he may oscillate the levers 47 and 51 at will for the purpose of connecting and disconnecting the clutch sleeves 23 and 36 with the sleeves 15 and 30. At 57a on the upright 9 is pivotally connected a bell-crank-lever 58a, the extension 59 of which has a pivotal connection at a suitable point with the reach 56 and the opposite extension 60 of said lever is provided with the laterally extended portions 61 and 62 which are suitably spaced apart and between which travels suitable means whereby the bellcrank-lever is automatically actuated for shifting the reach 56 for disconnecting the sleeves 23 and 36 from their co-operating clutch parts. The manner of operating the bell-crank-lever will be more fully described.

63 denotes a worm-wheel shaft, which at its forward end carries a worm-wheel 64 in mesh with-the Worm 16 on the shaft 11. Said worm-wheel has extended hub portions which are j ournaled in the bracket 19, somewhat in the manner seen in Figs. 2 and 3 and the hub portions thereof is squared to correspond to a squared portion of the wormwheel shaft 63, as seen in Fig. 3. Also carried by the squared portion of the shaft 63 is a sprocket 65 with which engages a sprocket chain 66 traveling over a sprocket 67 journaled on a short shaft or stud 68 carried in the cross-piece 8, as seen in Figs. 2 and 3. This chain travels up and down in the open space formed by the spaced laterally extended portions 61 and 62 of the bell-crank- IIO lever 5S and attached at suitable intervals on the chains are the short lugs or brackets 69 and 70 which are adapted to engage with the extension 62 of the bell-crank-lever and automatically move the same to facilitate in disconnecting the clutch parts in connection with said bell-crank-lever for checking the upward or downward movement of a wagon being elevated or lowered.

The worm wheel-shaft 63 is of suitable length and has its rear end journaled in a suitable bracket 71 provided with arms for supporting the same which are attached to the cross-brace 7 and the upright 9. On said shaft and between the sprocket 65 and bracket 71 is carried a drum 72 with which is connected and adapted to be wound there on the elevating and lowering chain or cable 73. This chain or cable extends up and over a sheave-wheel 74 journaled on the crossbrace 5, and said chain or cable at a suitable point in its length diverges into the two separate sections 75 and 76. lith such a construction it is preferable to provide a double sheave-wheel at 7 4 over which the said extensions 7 5 and 76 may be carried in the elevating or lowering of a wagon. The eXtension 75 after passing over the sheave-wheel 74 extends downwardly while the extension 76 runs longitudinal with the cross-brace 5 and over a sheave-wheel 77 and thence downwardly. When it is desired to elevate or raise the front end of a wagon for the purpose of discharging or allowing material to run out of the rear end thereof, after detaching the rear board, the sections of the chain or cable are preferably passed between the spokes of the opposite front .wheels and looped about the hubs thereof. This mode of attaching the elevating means to the front of the wagon is illustrated in outline in Fig. 1 and is the usual mode of elevating a wagon when the jack is constructed without a plat-form and while we have preferred to show our elevating mechanism in connection with this type of jack, it is understood that the same may be very readily attached to a jack where a platform is used on which the front wheels of the wagon rest and which is elevated substantially similar to the mode of operating the chain 73 to adapt the discharging of the material therefrom.

It is designed to operate the shaft 63 through the gears 27, 39 and 40 and the internal-ring-gear clutched with the worm 1 6 when it is desired to elevate a wagon and to accomplish this the operator will move the rod 58 in a direction which will shift the` reach 56 to cause the lever 51 to clutch the sleeve 36 with the sleeve 30 which has a clutch connection with the gear 27. Such movement while it fixes the worm to the shaft 11, also disconnects the sleeve 23 from the sleeve 17 as shown in Figs. 2 and 4 and adapts the raising of the wagon through such movement and through the worm wheel 64 carried by the shaft 63 and in mesh with the worm aforesaid. Wlhen the wagon has reached a pre-determined height the lug on the chain 66 has moved to a position where it engages with the extension 62 of the portion 60 of the bell-crank-lever 58 and actuating said lever imparts a slight reciprocating movement to the re ach 56 with which the bell-crank-lever is connected and disengages the sleeve 36 from the sleeve 30 and thereby checks the upward movement of the wagon. To lower the wagon the operator shifts the rod 5S in a direction just opposite to that just above described which will place or rather clutch the sleeve 23 with the sleeve 15 to which is attached or formed a part the, worm 16. Through this connection the operation of the worm will rotate the wormwheel and its shaft in a direction to permit the wagon to'be lowered and when the same has reached its lowermost point or again rests upon the ground the lug 69 of the chain 66 is in a position to engage with the extension 62 of the portion 6() of the bell-crank-lever and actuating the said lever imparts a slight reciprocating movement to the reach 56 with which the bellcrank-lever is connected andv disengages the sleeve 23 from the sleeve 15 and thereby checks the downward movement of the said wagon. Thus it will be seen that through the clutch operating devices and means for operating the same an operator has full control over the machine and may shift the parts so that the device may be caused to alternately raise or lower the wagon and at the same time when the machine is in operation, raising or lowering a wagon, at a pre-determined point in the elevation or lowering the same the clutch parts are automatically actuated for disconnecting the same to check the movement of the wagon at a desired height when elevating or at a desired depth when lowering.

Having thus fully described my invention, what T claim and desire to secure by Letters Patent of the United States, is

1. In an apparatus of the class specified, the combination with -elevating means for the front end of a wagon, a drive-shaft in connection with said elevating means, an internal-ring-gear on said shaft, a plurality of gears in mesh with said internal-gear one of which is carried'by the said shaft, clutch controlled means for clutching the gearing to the said shaft, and 0overning means actuated by the said shaft for disconnecting the clutch controlled means from the Ocaring.

2. In an apparatus of tue class specified, the combination with raising and. lowering means, a drive-shaft in connection with said means, an internal-ring-gear carried on said shaft, a plurality of gears in mesh with said ring-gear one of which is carried by the said IOO IOS

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shaft, hand operated means for clutching said gearing to the shaft, and means operating at predetermined intervals for automatically disconnecting said gearing from theshaft.

3. In an apparatus of the class specified, the combination with raising and lowering means, a drive-shaft, worm and worm-wheel gearing interposed between the said shafts and said raising and lowering means, an internal-ring-gear carried by said shaft and in connection with said worm, a plurality of gears in mesh with said internal-gear one of which is carried by said shaft, hand operated means for clutching the gearing to the shaft, and means operating at pre-determined in'- tervals for automatically disconnecting said gearing from the shaft.

4. In an apparatus of the class specified, the combination with raising and lowering means, a drive-shaft, worm and worin-wheel gearing interposed between the said shaft and'said raising and lowering means, an internal-ring-gear carried by said shaft and in connection with said worm, a plurality of gears in mesh with said internal-gear one of which is carried by said shaft, hand operated means for clutching either the said gearing or worm-wheel and their connections with said shaft, and means operating at pre-determined intervals in the raising or lowering of said raising and lowering means for automatically disconnecting the said gearing or worm from the said shaft.

5. In raising and lowering mechanism, a support, an intermittently driven wormshaft and worm, means for clutching the worm to the shaft, an internal-ring-gear carried by the said shaft and in engagement with said worm, clutch controlled driving vdevices on said shaft in connection with said ring-gear, and an endless belting provided with means for automatically controlling the clutch controlled driving devices and means for clutching the worm to the shaft, and thereby check the movement of said drivingshaft.

6. In raising and lowering mechanism, a drum-shaft supporting a drum and having attached thereto a worm-wheel, an intermittently actuated driving-shaft, a worm on said shaft in mesh with the said worm-wheel, means for clutching the worm-to the shaft for driving the worm-wheel in one direction, an internal-ring-gear also carried by said shaft and in engagement with said worm, gearing meshing with said internal-ring-gear, and mechanism for clutching said gearing to the shaft 'and thereby reversing the movement of the. said worm and worm-wheel through the connection of the internal-ringgear with said worm.

7. In raising and lowering mechanism, a drum-shaft supporting a drum having attached thereto a worm-wheel, a drivingshaft, a worm on said shaft in mesh with said worm-Wheel, means for clutching the worm to the shaft for operating said worm-wheel in one direction, an internal-ring-gear also carried by said shaft and in engagement with said worm, a plurality of gears in mesh with said internal-ring-gear one of which is carried on said shaft, and means for clutching said last mentioned gear to the shaft and therebyreversing the movement of said worm and worm-wheel through the operation of the internal-ring-gear in engagement with the worm.

8. In raising and lowering mechanism, a drum shaft supporting a drum and having attached thereto a worm-wheel, a drivingshaft, a worm on said shaft in mesh with the worm-wheel, mechanism for clutching the worm to the shaft and driving the wormwheel in one direction, an internal-ring-gear connected with said worm, a plurality of gears in mesh with said internal ring gear one of which is carried by said shaft, mechanism for clutching the last mentioned gear to the shaft for imparting a reverse movement to the worm through the internal-ringgear connected therewith, and automatically actuated means for dis-connecting the clutch mechanism aforesaid from either the worm or the gear for checking the movement of said shaft.

9. In raising and lowering mechanism, a drum shaft supporting a drum and having attached thereto a worm-wheel, means for actuating said worm-wheel consisting of a driving-shaft, a worm carried thereby and in mesh with the worm-wheel, an internal-ringgear connected with said worm, clutch mechanism for clutching the internal-ring-gear to the said shaft, a lever' connected with said clutch mechanism, hand operated means for moving the said lever to connect the clutch mechanism with the said internal-ring-gear, and automatically actuated means for reversing the lever and thereby dis-connecting the said clutch mechanism from the internalring-gear.

l0. In an apparatus of the class specified, the combination with raising and lowering means, a driving-shaft, a worm on the driving-shaft and in connection with said raising and lowering means, internally arranged gearing also carried on the said shaft and in connection with said worm, clutch means on the outer opposite ends of said shaft adapted to be intermittently and alternately connected with the worm and said internal gearing for clutching the same to the shaft, lever connections with the clutch means aforesaid, mechanism in connection with said levers, hand operated means for shifting the said lever simultaneously for clutching or disconnecting the worm or said internal gearing with the shaft, and means operating at predetermined intervals for automatically actuating said clutch means through the IOO IIO

said levers for checking the movement of said shaft.

11. In an apparatus of the class specified, the combinationwith raising and lowering means, of a drive-shaft, an elongated sleeve carried on said shaft and provided with a worm, means adapted to have engagement with the outer end of said sleeve for clutching the same to the shaft, internally arranged gearing having clutch connection with the inner end of the worm-sleeve, and means adapted to have engagement with said internal gearing for clutching the same to said shaft, said means for clutching the worm and the internal gearing to the shaft operating alternately.

12. In an apparatus of the class specified, the combination with raising and lowering means, of a drive-shaft, an elongated sleeve carried on said shaft and provided with a worm, a clutch sleeve slidably and revolubly carried on the shaft adapted to have a clutch engagement with the outer end of the wormsleeve, internally arranged gearing having clutch connection with the inner end of the worm-sleeve, a clutch sleeve slidably and revoiubly carried on the opposite end of said shaft adapted to have a clutch engagement with said internal gearing, and means for controlling said clutch sleeves. v

13. In an apparatus of the class specified, the combination with raising and lowering means, of a drive-shaft, an elongated sleeve carried on said shaft and providedwith a worm, means adapted to have engagement with the outer end of said sleeve for clutching the same to the shaft, an internal-ring-gear having connection with the inner end of the wormsleeve and carried on said shaft, a plurality of gears in mesh with said internalring-gear one of which is carried on said shaft, means adapted to have connection with said last mentioned gear for clutching the same to the shaft, and mechanism for controlling the clutch means aforesaid.

14. In an apparatus of the class specified, the combination with raising and lowering means, of a drive-shaft, a worm-sleeve adapted to have an intermittent clutch connection with said shaft, an internal-gear in connection 'with said worin-sleeve, a gear carried on said shaft and adapted to have an intermittent clutch connection therewith, gearing interposed between. the said gear and internal-gear, and means operating alternately for clutching the worn -sleeve and gear to said shaft.

15. In an apparatus of the class specified, the combination with raising and lowering means, of a drive-shaft, a worm loosely carried on said shaft and adapted to have an intermittent clutch connection therewith, an internal-ring-gear provided with a hub portion having connection with said worm, a gear loosely carried on said shaft and adapted to have an intermittent clutch connection therewith, one or more short shafts disposed parallel with the drive-shaft, gears carried by said short shafts and intermeshing with the internal-ring-gear andgear carried by the drive-shaft, and mechanism for clutching the worm or the gear aforesaid to the drive-shaft.

16. In an apparatus of the class specified, the combination of a drum shaft and drum, elevating means adapted to be operated by said drum-shaft, a drive-shaft, a worm loosely carried on said shaft and adapted to have an intermittent clutch connection therewith, gearing connecting` the worm with the drum-shaft, internally arranged gearing loosely carried on the drive-shaft in connection with the worm and adapted to have an intermittent clutch connection with said shaft, means for clutching the worm to the shaft when it is adapted to lower said elevating means, and means adapted to clutch the internal gearing to the shaft when it is adapted to raise said elevating means, which said connection reverses the movement of said drum.

17. In an apparatus of the class specified, the combination of a drum-shaft and drum, elevating means adapted to be o erated by said drum shaft, a drive sha't, a worm loosely carried on said shaft and adapted to have an intermittent clutch connection therewith, gearing connecting the worm with the drum shaft, internally arranged gearing loosely carried von the drive-shaft in the connection with the worm and adapted to have an intermittent clutch connection with said shaft, means for clutching Vthe worm to the shaft when it is adapted to lower said elevating means, means adapted to clutch the internal-gearing to the shaft when it is adapted to raise said elevating means, a bell-crank-lever having a common connection with the clutch means for the worm and internally arranged gearing, and an endless belting adapted to be actuated by the drumshaft and provided with means for engaging with said bell-crank-lever for disengaging said clutch means and checking the movement of said shaft.

In testimony whereof we affix our signature, in presence of two witnesses.

GEORGE H AAG. ALBERT HAAG.

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